my_list = ['a','b','c']
print(my_list.__len__())

print(len(my_list))

my = list('999112')
print(my)

print("==========================")
myqq = ['abc','efg','kgl']
print(myqq.append(['a']))
print(myqq)

myqq.extend(['1', '2'])
print(myqq)


numbers = [1,5,3,9,7]
numbers.sort(reverse=True)
print(numbers)
